文献类型：期刊文献

英文题名：Slip transmutation between basal ?a? dislocation and {112ˉ1} twinning across {112ˉ4} twin boundary in titanium

作者：Liu, Xingxing[1]; Yin, Xunlu[1]; Yang, Xiaofeng[1]; Chen, Hao[1]; Wang, Jian[2]

机构：[1] Key Laboratory of Pressure Systems and Safety, Ministry of Education, School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, 200237, China; [2] Mechanical and Materials Engineering, University of Nebraska-Lincoln, Lincoln, NE, 68588, United States

年份：2022

卷号：221

外文期刊名：Scripta Materialia

收录：EI(收录号：20223312583443)

语种：英文

外文关键词：Titanium - Twinning

摘要：Molecular dynamics simulations reveal slip transmutation mechanisms between basal ?a? dislocations and {112ˉ1} twinning in titanium. When a co-planar pileup of basal ?a? dislocations approaches (112ˉ4) coherent twin boundary (CTB), the 1st dislocation transmutes into a four-layer (112ˉ1) twin in the (112ˉ4) twin, forming a (112ˉ4)?(112ˉ1) double twin, and the 2nd and 3rd dislocations climb along the (112ˉ4) CTB and then transmute into twinning dislocations, thickening the (112ˉ1) secondary twin. When the (112ˉ1) secondary twin propagates and encounters the other (112ˉ4) CTB, a reverse transmutation happens associated with the nucleation and emission of partial dislocations. ? 2022